/*
 * Copyright 2007-2008 Sun Microsystems, Inc.  All Rights Reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *   - Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *
 *   - Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *
 *   - Neither the name of Sun Microsystems nor the names of its
 *     contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package com.sun.swingset3.demos.spinner;

import javax.swing.*;
import java.awt.*;

/**
 * @author Mikhail Lapshin
 */
public class JPaletteShower extends JComponent {
    private Palette palette;

    public JPaletteShower(Palette palette, int width, int height) {
        setPreferredSize(new Dimension(width, height));
        setMinimumSize(new Dimension(width, height));
        this.palette = palette;
    }

    @Override
    protected void paintComponent(Graphics g) {
        super.paintComponent(g);
        int w = getSize().width;
        int h = getSize().height;
        int maxIndex = palette.getSize() - 1;
        double rate = (double) maxIndex / w;
        for (int x = 0; x < w; x++) {
            g.setColor(palette.getColor((int) (x * rate)));
            g.fillRect(x, 0, 1, h);
        }
    }

    public Palette getPalette() {
        return palette;
    }

    public void setPalette(Palette palette) {
        this.palette = palette;
        repaint();
    }
}
